Granted Patent
Utility
US 5,810,889 · App. 08/768,051
Aqueous textile treatment compositions containing an ultra-violet absorbing agent
Inventors:
Werner Kaufmann, Rolf Hilfiker, Hanspeter Gysin, Urs Hofer, Robert Truniger, Hans Peter Harri
Patented Case
View Patent ↗
Granted: Sep 22, 1998
Filed: Dec 16, 1996
Inventors
Werner Kaufmann
Rolf Hilfiker
Hanspeter Gysin
Urs Hofer
Robert Truniger
Hans Peter Harri
Assignee (at issue)
Ciba Specialty Chemicals Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.